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Pal S, Hait A, Mandal S, Roy A, Sar P, Kazy SK. Crude oil degrading efficiency of formulated consortium of bacterial strains isolated from petroleum-contaminated sludge. 3 Biotech 2024; 14:220. [PMID: 39247458 PMCID: PMC11377402 DOI: 10.1007/s13205-024-04066-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 08/26/2024] [Indexed: 09/10/2024] Open
Abstract
Crude oil contamination has been widely recognized as a major environmental issue due to its various adverse effects. The use of inhabitant microorganisms (native to the contaminated sites) to detoxify/remove pollutants owing to their diverse metabolic capabilities is an evolving method for the removal/degradation of petroleum industry contaminants. The present study deals with the exploitation of native resident bacteria from crude oil contaminated site (oil exploration field) for bioremediation procedures. Fifteen (out of forty-four) bioremediation-relevant aerobic bacterial strains, belonging to the genera of Bacillus, Stenotrophomonas, Pseudomonas, Paenibacillus, Rhizobium, Burkholderia, and Franconibacter, isolated from crude oil containing sludge, have been selected for the present bioremediation study. Crude oil bioremediation performance of the selected bacterial consortium was assessed using microcosm-based studies. Stimulation of the microbial consortium with nitrogen or phosphorous led to the degradation of 60-70% of total petroleum hydrocarbon (TPH) in 0.25% and 0.5% crude oil experimental sets. CO2 evolution, indicative of crude oil mineralization, was evident with the highest evolution being 28.6 mg mL-1. Ecotoxicity of treated crude oil-containing media was assessed using plant seed germination assay, in which most of the 0.25% and 0.5% treated crude oil sets gave positive results thereby suggesting a reduction in crude oil toxicity.
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Affiliation(s)
- Siddhartha Pal
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Arpita Hait
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Sunanda Mandal
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Ajoy Roy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
| | - Pinaki Sar
- Department of Bioscience and Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302 India
| | - Sufia K Kazy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur, West Bengal 713209 India
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2
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Schryer AD, Siciliano SD. Do phosphorus amendments enhance biodegradation activity in stalled petroleum hydrocarbon-contaminated soil? JOURNAL OF ENVIRONMENTAL QUALITY 2024; 53:669-683. [PMID: 38993109 DOI: 10.1002/jeq2.20594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 05/18/2024] [Indexed: 07/13/2024]
Abstract
Phosphorus (P) fertilizers promote soil petroleum-hydrocarbon (PHC) bioremediation by correcting carbon-to-P ratio imbalances. While these inputs create conditions favorable to microbial growth, areas of a site or an entire site with low degradation rates (i.e., "stalled") occur for unknown reasons. We hypothesized that soil conditions limit P bioavailability, leading to stalls in PHC bioremediation, and adding the correct P amendment restarts microbial activity. Soils were collected and characterized from four cold calcareous PHC-impacted sites in Saskatchewan, Canada, undergoing bioremediation. A generalized linear mixed model identified that regions with lower degradation rates possessed a neutral pH with high magnetic and salinity values. In a subsequent laboratory experiment, the proportion of benzene degraded at greater rates within active (i.e., higher degradation rates) than stalled soils, thereby following model predictions (p-value = 0.19, Kruskal-Wallis). The PHC degradation efficiency of different P amendments was tested by doping stalled soils (n = 3) with one of five treatments: 0 (control), 0 (autoclaved control), or 50 mg phosphate kg-1 soil as sodium diphosphate, triethyl phosphate, or tripolyphosphate. Tripolyphosphate accelerated benzene degradation (75.5 ± 5.4%) in one stalled soil (Outlook 323) and increased degradation non-significantly (43.9 ± 9.4%) in another (Allan 917). Alternatively, the final sample (Davidson 421) possessed the greatest benzene removal with no amendments. This implies that soil P bioavailability may not be the sole cause of decreased microbial activity. Accordingly, combining model outputs with mineralogy and microbiology investigations could enhance PHC biodegradation rates in these cold calcareous soils.
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Affiliation(s)
- Aimée D Schryer
- Department of Soil Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Steven D Siciliano
- Department of Soil Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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3
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Kundu A, Gao X, Khandelwal N, Banerjee A, Ghoshal S. Oleic-acid functionalized mesoporous silica nanoparticles with a hydroxyapatite core enhanced growth of the hydrocarbon degrader Dietzia maris at oil-water interfaces. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132653. [PMID: 37820524 DOI: 10.1016/j.jhazmat.2023.132653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 10/13/2023]
Abstract
Rapid biodegradation of poorly water-soluble hydrocarbons as nonaqueous (oil) phases in contaminated aquatic environments is enabled by attachment of hydrocarbon-degrading bacteria to the oil-water interface. Herein, we report the synthesis of nanoparticles comprising a hydroxyapatite (Ca5(PO4)3(OH)) core encapsulated in a mesoporous silica shell and surface-modified with oleic acid (OA-nHAP@MSN) for targeted binding at the oil-water interface and to supply P to bacteria at the interface. P is an essential and often limiting nutrient for bacteria in hydrocarbon-contaminated environments. In microcosm experiments, where the hydrocarbon-degrading bacteria, Dietzia maris strain NWWC4, and OA-nHAP@MSN were inoculated in mineral media in contact with pure liquid hexadecane (sole C source), there was 419.6-fold growth at the hexadecane-water interface, compared to 31.2-fold in identical, but NP-free microcosms. The continuous release of P from the hydroxyapatite core in OA-nHAP@MSN to water was demonstrated in separate experiments in well mixed batch systems and was found to be pH-sensitive. Environmental Scanning Electron Microscopy showed significantly larger cell aggregates and dense biofilms in the OA-nHAP@MSN-amended systems, compared to NP-free systems. Our results demonstrate a strategy for enhancing oil-spill bioremediation using NPs targeting nutrient supply to hydrocarbon-degrading bacteria at oil-water interfaces.
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Affiliation(s)
- Anirban Kundu
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Xiaoyu Gao
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Nitin Khandelwal
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Anwesha Banerjee
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Subhasis Ghoshal
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada.
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4
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Kundu A, Harrisson O, Ghoshal S. Impacts of Arctic diesel contamination on microbial community composition and degradative gene abundance during hydrocarbon biodegradation with and without nutrients: A case study of seven sub-Arctic soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:161777. [PMID: 36709895 DOI: 10.1016/j.scitotenv.2023.161777] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Although a number of studies have assessed hydrocarbon degradation or microbial responses in petroleum contaminated soils, few have examined both and/or assessed impacts in multiple soils simultaneously. In this study petroleum hydrocarbon biodegradation and microbial activity was monitored in seven sub-Arctic soils at similar levels (∼3500-4000 mg/kg) of Arctic diesel (DSL), amended with moisture and nutrients (70 mg-N/kg, 78 mg-P/kg), and incubated at site-representative summer temperatures (∼7 °C) under water unsaturated conditions. Total petroleum hydrocarbon (TPH) biodegradation extents (42.7-85.4 %) at 50 days were slightly higher in nutrient amended (DSL + N,P) than unamended (DSL) systems in all but one soil. Semi-volatile (C10-C16) hydrocarbons were degraded to a greater extent (40-80 %) than non-volatile (C16-C24) hydrocarbons (20-40 %). However, more significant shifts in microbial diversity and relative abundance of genera belonging to Actinobacteria and Proteobacteria phyla were observed in DSL + N,P than in DSL systems in all soils. Moreover, higher abundance of the alkane degrading gene alkB were observed in DSL + N,P systems than in DSL systems for all soils. The more significant microbial community response in the DSL + N,P systems indicate that addition of nutrients may have influenced the microbial community involved in degradation of carbon sources other than the diesel compounds, such as the soil organic matter or degradation intermediates of diesel compounds. Nocardioides, Arthrobacter, Marmoricola, Pseudomonas, Polaromonas, and Massilia genera were present in high relative abundance in the DSL systems suggesting those genera contained hydrocarbon degraders. Overall, the results suggest that the extents of microbial community shifts or alkB copy number increases may not be closely correlated to the increase in hydrocarbon biodegradation and thus bioremediation performance between various treatments or across different soils.
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Affiliation(s)
- Anirban Kundu
- Department of Civil Engineering, McGill University, Montreal, QC H3A 0C3, Canada
| | - Orfeo Harrisson
- Department of Civil Engineering, McGill University, Montreal, QC H3A 0C3, Canada
| | - Subhasis Ghoshal
- Department of Civil Engineering, McGill University, Montreal, QC H3A 0C3, Canada.
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5
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Li S, Chen W, Liu D, Tao Y, Ma H, Feng Z, Li S, Zhou K, Wu J, Li J, Wei Y. Effect of superphosphate addition on heavy metals speciation and microbial communities during composting. BIORESOURCE TECHNOLOGY 2022; 359:127478. [PMID: 35714776 DOI: 10.1016/j.biortech.2022.127478] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/10/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Superphosphate fertilizer (SSP) as an additive can reduce the nitrogen loss and increase available phosphorus in composting but few studies investigated the effect of SSP addition on heavy metal and microbial communities. In this study, different ratios (10%, 18%, 26%) of SSP were added into pig manure composting to assess the changes of heavy metal (Cu, Mn, As, Zn, and Fe) fractions, bacterial and fungal communities as well as their interactions. SSP addition at 18% had lower ecological risk but still increased the bioavailability of Cu, Mn, and Fe in composts compared to control. Adding 18% SSP into compost decreased bacterial number and increased the fungal diversity compared to CK. Redundancy analysis indicated heavy metal fractions correlated significantly with bacterial and fungal community compositions in composting with 18% SSP. Network analysis showed adding 18% SSP increased microbial interaction and positive cooperation especially enhanced the proportion of Proteobacteria and Ascomycota.
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Affiliation(s)
- Shuxin Li
- School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, China
| | - Wenjie Chen
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Dun Liu
- Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Beihang University, Beijing 100191, China
| | - YueYue Tao
- Institute of Agricultural Sciences in Taihu Lake District, Suzhou Academy of Agricultural Sciences, Suzhou 215155, China
| | - Hongting Ma
- School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, China
| | - Ziwei Feng
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Songrong Li
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Kaiyun Zhou
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Juan Wu
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Ji Li
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Yuquan Wei
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China.
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6
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Elikem E, Persico AP, Bulmer D, Siciliano SD, Mussone P, Peak D. A sustainable colloidal material with sorption and nutrient-supply capabilities for in situ groundwater bioremediation. JOURNAL OF ENVIRONMENTAL QUALITY 2021; 50:1440-1451. [PMID: 34647326 DOI: 10.1002/jeq2.20293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Microbial degradation of subsurface organic contaminants is often hindered by the low availability of both contaminants and nutrients, especially phosphorus (P). The use of activated carbon and traditional P fertilizers to overcome these challenges has proved ineffective; therefore, we sought to find an innovative and effective solution. By heating bone meal-derived organic residues in water in a closed reactor, we synthesized nonporous colloids composed of aromatic and aliphatic structures linked to P groups. X-ray absorption near edge spectroscopy analysis revealed that the materials contain mostly bioavailable forms of P (i.e., adsorbed P and magnesium-bearing brushite). The capacity of the materials to adsorb organic contaminants was investigated using benzene and batch isotherm experiments. The adsorption isotherms were fitted to the linearized Freundlich model; isotherm capacity (logKF ) values for the materials ranged between 1.6 and 2.8 μg g-1 . These results indicate that the colloidal materials have a high affinity for organic contaminants. This, coupled with their possession of bioavailable P, should make them effective amendments for in situ groundwater bioremediation. Also, the materials' chemical properties suggest that they are not recalcitrant, implying that they will not become potential contaminants when released into the environment.
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Affiliation(s)
- Essouassi Elikem
- Dep. of Soil Science, Univ. of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada
| | - Arantxa P Persico
- Applied BioNanotechnology Industrial Research, Northern Alberta Institute of Technology, 10210 Princess Elizabeth Avenue NW, Edmonton, AB, T5G 0Y2, Canada
| | - David Bulmer
- Dep. of Soil Science, Univ. of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada
| | - Steven D Siciliano
- Dep. of Soil Science, Univ. of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada
| | - Paolo Mussone
- Applied BioNanotechnology Industrial Research, Northern Alberta Institute of Technology, 10210 Princess Elizabeth Avenue NW, Edmonton, AB, T5G 0Y2, Canada
| | - Derek Peak
- Dep. of Soil Science, Univ. of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, Canada
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7
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Mamet SD, Jimmo A, Conway A, Teymurazyan A, Talebitaher A, Papandreou Z, Chang YF, Shannon W, Peak D, Siciliano SD. Soil Buffering Capacity Can Be Used To Optimize Biostimulation of Psychrotrophic Hydrocarbon Remediation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:9864-9875. [PMID: 34170682 DOI: 10.1021/acs.est.1c01113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Effective bioremediation of hydrocarbons requires innovative approaches to minimize phosphate precipitation in soils of different buffering capacities. Understanding the mechanisms underlying sustained stimulation of bacterial activity remains a key challenge for optimizing bioremediation-particularly in northern regions. Positron emission tomography (PET) can trace microbial activity within the naturally occurring soil structure of intact soils. Here, we use PET to test two hypotheses: (1) optimizing phosphate bioavailability in soil will outperform a generic biostimulatory solution in promoting hydrocarbon remediation and (2) oligotrophic biostimulation will be more effective than eutrophic approaches. In so doing, we highlight the key bacterial taxa that underlie aerobic and anaerobic hydrocarbon degradation in subarctic soils. In particular, we showed that (i) optimized phosphate bioavailability outperformed generic biostimulatory solutions in promoting hydrocarbon degradation, (ii) oligotrophic biostimulation is more effective than eutrophic approaches, and (iii) optimized biostimulatory solutions stimulated specific soil regions and bacterial consortia. The knowledge gleaned from this study will be crucial in developing field-scale biodegradation treatments for sustained stimulation of bacterial activity in northern regions.
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Affiliation(s)
- Steven D Mamet
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Amy Jimmo
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Alexandra Conway
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Aram Teymurazyan
- Department of Physics, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - Alizera Talebitaher
- Department of Physics, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - Zisis Papandreou
- Department of Physics, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - Yu-Fen Chang
- Department of Physics, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
- Department of Mechanical and Marine Engineering, Western Norway University of Applied Sciences, Bergen 5063, Norway
- Nuclear Medicine and Radiation Biology Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, 9037 Tromsø, Norway
| | - Whitney Shannon
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
- Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Derek Peak
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Steven D Siciliano
- College of Agriculture and Bioresources, Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
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8
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Schryer A, Bradshaw K, Siciliano SD. Methodology and validation of a new tandem mass spectrometer method for the quantification of inorganic and organic 18O-phosphate species. PLoS One 2020; 15:e0229172. [PMID: 32092104 PMCID: PMC7039501 DOI: 10.1371/journal.pone.0229172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 02/01/2020] [Indexed: 11/18/2022] Open
Abstract
Phosphorus (P) fertilizers are crucial to achieve peak productivity in agricultural systems. However, the fate of P fertilizers via microorganism incorporation and the exchange processes between soil pools is not well understood. 18Oxygen-labelled phosphate (18O- Pi) can be tracked as it cycles through soil systems. Our study describes biological and geochemical P dynamics using a tandem mass spectrometry (MS/MS) method for the absolute quantification of 18O- Pi. Soil microcosms underwent three treatments: (i) 18O- Pi, (ii) unlabelled phosphate (16O- Pi) or (iii) Milli-Q control, dissolved in a bio-stimulatory solution. During a 6-week series the microcosms were sampled to measure P by Hedley sequential fractionation and DNA extraction samples digested to 3'-deoxynucleoside 5'-monophosphates (dNMP). A MS/MS attached to a HPLC analyzed each P-species through collision-induced dissociation. The resin-extractable and bicarbonate 18O- Pi and 16O- Pi fractions displayed similar precipitation and adsorption-desorption trends. Biotic activity measured in the NaOH and dNMP fractions rapidly delabelled 18O- Pi; however, the MS/MS measured some 18O that remained between the P backbone and deoxyribose sugars. After 6 weeks, the 18O- Pi had not reached the HCl soil pool, highlighting the long-term nature of P movement. Our methodology improves on previous isotopic tracking methods as endogenous P does not dilute the system, unlike 32P techniques, and measured total P is not a ratio, dissimilar from natural abundance techniques. Measuring 18O- Pi using MS/MS provides information to enhance land sustainability and stewardship practices regardless of soil type by understanding both the inorganic movement of P fertilizers and the dynamic P pool in microbial DNA.
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Affiliation(s)
- Aimée Schryer
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Kris Bradshaw
- Federated Co-operatives Limited, Saskatoon, Saskatchewan, Canada
| | - Steven D. Siciliano
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- * E-mail:
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9
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The Influences of Magnesium upon Calcium Phosphate Mineral Formation and Structure as Monitored by X-ray and Vibrational Spectroscopy. SOIL SYSTEMS 2020. [DOI: 10.3390/soilsystems4010008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Calcium phosphate minerals are typically the solubility-limiting phase for phosphate in calcareous soils. Magnesium (Mg), despite being present in high concentrations in calcareous soils, has been largely neglected in the study of formation and stabilization of soil phosphate minerals due to the high solubility of pure Mg phosphate phases. In this study, a series of four common calcium and magnesium phosphate minerals, hydroxyapatite/bobierrite and brushite/newberyite were synthesized in the presence of widely varying Mg concentrations to examine the effects of Mg substitution upon the local bonding environment and overall structure of the precipitates. Phosphorus K-edge X-Ray absorption near edge structure (XANES) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) provide insight into the local coordination environment, whereas synchrotron powder X-Ray diffraction (SP-XRD) and transmission electron microscopy (TEM) were used for structural analysis. In acidic to neutral pH, Mg-bearing brushite phases formed over a wide range of Ca:Mg ratios. In neutral to high pH systems, a short-range order amorphous calcium phosphate (ACP) with a local structure analogous with hydroxyapatite precipitated for a wide range of Ca to Mg ratios. It can be inferred that the presence of Mg in soils leads to stabilization of metastable phases: via cation substitution in brushite and via poisoning of crystal growth propagation for hydroxyapatite.
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Huang L, Bradshaw K, Grosskleg J, Siciliano SD. Assessing Space, Time, and Remediation Contribution to Soil Pollutant Variation near the Detection Limit Using Hurdle Models to Account for a Large Proportion of Nondetectable Results. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6824-6833. [PMID: 31070028 DOI: 10.1021/acs.est.8b07110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Many emerging, and some legacy, pollutants pose risks to humans and ecosystems near the detection limits (DL) of existing analytical systems. As a result, site assessments and management options are often presented with data sets that are sparse, highly skewed, and left-censored. Existing analysis methods are unable to differentiate effects of treatment from covariates, such as space, obscuring influences of site management. As a case study, we computed the mean and variance of censored soil benzene data across four sites over a three year period by gamma distribution with a maximum likelihood. Further, a combined hurdle model to accommodate left-censored concentrations was applied to analyze factors affecting benzene variation. This approach allowed us to assess the success and spatial dependency of a biostimulatory solution in reducing benzene concentrations at very low concentrations. Benzene concentrations decreased due to the addition of biostimulatory solution and spatial effects, but the detection of soil benzene after biostimulation was highly spatially dependent. By combining computed values for censored observations estimated by the hurdle-gamma model and uncensored observations, we can get the pseudocomplete data sets. The combined model is ideally suited to evaluate existing and emerging pollutants, that pose risks to humans and ecosystems but are typically at or near analytical detection limits.
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Affiliation(s)
- Lidong Huang
- Department of Agricultural Resources & Environments , Nanjing University of Information Science and Technology , Nanjing 210044 , China
- Department of Soil Science , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5A8 , Canada
| | - Kris Bradshaw
- Federated Cooperatives Limited , Saskatoon , Saskatchewan S7K 3M9 , Canada
| | - Jay Grosskleg
- Federated Cooperatives Limited , Saskatoon , Saskatchewan S7K 3M9 , Canada
| | - Steven D Siciliano
- Department of Soil Science , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5A8 , Canada
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11
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Karppinen EM, Mamet SD, Stewart KJ, Siciliano SD. The Charosphere Promotes Mineralization of 13C-Phenanthrene by Psychrotrophic Microorganisms in Greenland Soils. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:559-567. [PMID: 31180417 DOI: 10.2134/jeq2018.10.0370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
When soil is frozen, biochar promotes petroleum hydrocarbon (PHC) degradation, yet we still do not understand why. To investigate microbial biodegradation activity under frozen conditions, we placed 60-μm mesh bags containing 6% (v/v) biochar created from fishmeal, bonemeal, bone chip, or wood into PHC-contaminated soil, which was then frozen to -5°C. This created three soil niches: biochar particles, the charosphere (biochar-contiguous soil), and bulk soil outside of the bags. After 90 d, C-phenanthrene mineralization reached 55% in bonemeal biochar and 84% in bone chip biochar charosphere soil, compared with only 43% in bulk soil and 13% in bone chip biochar particles. Soil pH remained near neutral in bone chip and bonemeal biochar treatments, unlike wood biochar, which increased alkalinity and likely made phosphate unavailable for microorganisms. Generally, charosphere soil had higher aromatic degradative gene abundances than bulk soil, but gene abundance was not directly linked to C-phenanthrene mineralization. In bone chip biochar-amended soils, phosphate successfully predicted microbial community composition, and abundances of and increased in charosphere soil. Biochar effects on charosphere soil were dependent on feedstock material and suggest that optimizing the charosphere in bone-derived biochars may increase remediation success in northern regions.
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12
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Wu J, Zhang A, Li G, Wei Y, Jia F, Liang Y, Cheng Y, Liu Y. Impact of phosphate additive on organic carbon component degradation during pig manure composting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:11805-11814. [PMID: 30815810 DOI: 10.1007/s11356-019-04511-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
Phosphate, as an additive to composting, could significantly reduce ammonia emission and nitrogen loss but may also cause adverse effects on the degradation of organic matter. However, there is little information about the influence of pH change, salt content, and phosphate on different organic fraction degradation during composting with the addition of phosphate at a higher level. In this study, the equimolar phosphoric acid (H3PO4), sulfuric acid (H2SO4), and dipotassium phosphate (K2HPO4) were added into pig manure composting with 0.25 mol mass per kilogram of dry matter basis addition amount to evaluate the effect of H+, PO43-, and salinity on carbon component transformation and organic matter degradation. The results showed that both H3PO4 and K2HPO4 additives could lead to shorter duration in the thermophilic phase, lower degradation of lignocellulose, and lesser carbon loss compared to CK, even though had different pH, i.e., acidic and alkaline conditions, respectively. Besides, the addition of H3PO4, H2SO4, and K2HPO4 could increase the degradation of soluble protein and lipid during composting. Redundancy analysis demonstrated that the variation in different organic carbon fractions was significantly correlated with the changes of pH and the presence of PO43-, but not with SO42- and electrical conductivity, suggesting that pH and phosphate were the more predominant factors than salinity for the inhibition of organic matter degradation. Taken together, as acidic phosphate addition produces a true advantage of controlling nitrogen loss and lower inhibition of organics transformation during composting, the expected effects may result in more efficient composting products.
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Affiliation(s)
- Juan Wu
- College of Resource and Environmental Science, China Agricultural University, Beijing, 100193, China
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, China
- Environmental Monitoring Station of Baotou, Inner Mongolia, 014060, China
| | - Aiguo Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Guoxue Li
- College of Resource and Environmental Science, China Agricultural University, Beijing, 100193, China.
| | - Yuquan Wei
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China.
| | - Fuya Jia
- Environmental Monitoring Station of Baotou, Inner Mongolia, 014060, China
| | - Ying Liang
- Environmental Monitoring Station of Baotou, Inner Mongolia, 014060, China
| | - Yandong Cheng
- Environmental Monitoring Station of Baotou, Inner Mongolia, 014060, China
| | - Yan Liu
- Environmental Monitoring Station of Baotou, Inner Mongolia, 014060, China
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13
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Peng C, Zhang Y, Huang S, Li X, Wang Z, Li D. Sediment phosphorus release in response to flood event across different land covers in a restored wetland. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:9113-9122. [PMID: 30715698 DOI: 10.1007/s11356-019-04398-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
The phosphorus (P) fraction and its release characteristics from sediment in response to flood events across different land covers (i.e., reclaimed land with dominant vegetation of Phragmites australis and/or Typha orientalis, grassland with dominant vegetation of annual and perennial forbs, and bare land) in the lakeshore of Chaohu Lake were investigated. The results indicated that the re-flooding of a restored wetland led to P release. IP (inorganic P) was the major P fraction in the soils pre-flood and post-flood. For all the soil samples, the rank order of P fractions was Ca-P (P associated with calcium) > OP (organic P) > Fe/Al-P (P bound to Al, Fe, and Mn oxides and hydroxides). During flooding, Fe/Al-P contributed the most as the P release source in the soils and to the P sources for the overlying water. In reclaimed land, Fe/Al-P release correlated significantly with soil pH. In grassland, Fe/Al-P release correlated significantly with soil pH and Al content. In bare land, Fe/Al-P release correlated significantly with Al and clay content. The max TP release rates were also significantly influenced by land cover, and the values in bare land, grassland, and reclaimed land were 9.91 mg P m-2 day-1, 8.10 mg P m-2 day-1, and 5.05 mg P m-2 day-1, respectively. The results showed that the P release processes might be regulated by different factors across different land covers, and that the re-introduction of vegetation during wetland restoration must be taken into account prior to flood events to avoid an undesirable degradation of water quality.
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Affiliation(s)
- Chengrong Peng
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Yun Zhang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shun Huang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoyan Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhicong Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Dunhai Li
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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14
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Chang YF, Siciliano SD, Mamet S, Conway AJ, Schebel A, Shannon W, Christopher K, Thompson K, Talebitaher A, Papandreou Z, Teymurazyan A. Applying a Modular PET System to Investigate Bioremediation of Subsurface Contamination: A Proof-of-Principle Study. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/1120/1/012077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Roy A, Dutta A, Pal S, Gupta A, Sarkar J, Chatterjee A, Saha A, Sarkar P, Sar P, Kazy SK. Biostimulation and bioaugmentation of native microbial community accelerated bioremediation of oil refinery sludge. BIORESOURCE TECHNOLOGY 2018; 253:22-32. [PMID: 29328931 DOI: 10.1016/j.biortech.2018.01.004] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/29/2017] [Accepted: 01/01/2018] [Indexed: 06/07/2023]
Abstract
Scope for developing an engineered bioremediation strategy for the treatment of hydrocarbon-rich petroleum refinery waste was investigated through biostimulation and bioaugmentation approaches. Enhanced (46-55%) total petroleum hydrocarbon (TPH) attenuation was achieved through phosphate, nitrate or nitrate+phosphate amendment in the sludge with increased (upto 12%) abundance of fermentative, hydrocarbon degrading, sulfate-reducing, CO2-assimilating and methanogenic microorganisms (Bacillus, Coprothermobacter, Rhodobacter, Pseudomonas, Achromobacter, Desulfitobacter, Desulfosporosinus, T78, Methanobacterium, Methanosaeta, etc). Together with nutrients, bioaugmentation with biosurfactant producing and hydrocarbon utilizing indigenous Bacillus strains resulted in 57-75% TPH reduction. Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) analysis revealed enhanced gene allocation for transporters (0.45-3.07%), ABC transporters (0.38-2.07%), methane (0.16-1.06%), fatty acid (0.018-0.15%), nitrogen (0.07-0.17%), butanoate (0.06-0.35%), propanoate (0.004-0.26%) metabolism and some xenobiotics (0.007-0.13%) degradation. This study indicated that nutrient-induced community dynamics of native microorganisms and their metabolic interplay within oil refinery sludge could be a driving force behind accelerated bioremediation.
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Affiliation(s)
- Ajoy Roy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713 209, WB, India
| | - Avishek Dutta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India; School of Bio Science, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Siddhartha Pal
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713 209, WB, India
| | - Abhishek Gupta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Jayeeta Sarkar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Ananya Chatterjee
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713 209, WB, India
| | - Anumeha Saha
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Poulomi Sarkar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Pinaki Sar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721 302, WB, India
| | - Sufia K Kazy
- Department of Biotechnology, National Institute of Technology Durgapur, Durgapur 713 209, WB, India.
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16
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Mamet SD, Ma B, Ulrich A, Schryer A, Siciliano SD. Who Is the Rock Miner and Who Is the Hunter? The Use of Heavy-Oxygen Labeled Phosphate (P 18O 4) to Differentiate between C and P Fluxes in a Benzene-Degrading Consortium. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:1773-1786. [PMID: 29378402 DOI: 10.1021/acs.est.7b05773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phosphorus availability and cycling in microbial communities is a key determinant of bacterial activity. However, identifying organisms critical to P cycling in complex biodegrading consortia has proven elusive. Here we assess a new DNA stable isotope probing (SIP) technique using heavy oxygen-labeled phosphate (P18O4) and its effectiveness in pure cultures and a nitrate-reducing benzene-degrading consortium. First, we successfully labeled pure cultures of Gram-positive Micrococcus luteus and Gram-negative Bradyrhizobium elkanii and separated isotopically light and heavy DNA in pure cultures using centrifugal analyses. Second, using high-throughput amplicon sequencing of 16S rRNA genes to characterize active bacterial taxa (13C-labeled), we found taxa like Betaproteobacteria were key in denitrifying benzene degradation and that other degrading (nonhydrocarbon) inactive taxa (P18O4-labeled) like Staphylococcus and Corynebacterium may promote degradation through production of secondary metabolites (i.e., "helper" or "rock miner" bacteria). Overall, we successfully separated active and inactive taxa in contaminated soils, demonstrating the utility of P18O4-DNA SIP for identifying actively growing bacterial taxa. We also identified potential "miner" bacteria that choreograph hydrocarbon degradation by other microbes (i.e., the "hunters") without directly degrading contaminants themselves. Thus, while several taxa degrade benzene under denitrifying conditions, microbial benzene degradation may be enhanced by both direct degraders and miner bacteria.
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Affiliation(s)
- Steven D Mamet
- Department of Soil Science, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Bin Ma
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Ania Ulrich
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta T6G 1H9, Canada
| | - Aimée Schryer
- Department of Soil Science, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Steven D Siciliano
- Department of Soil Science, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5A8, Canada
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17
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Hamilton JG, Grosskleg J, Hilger D, Bradshaw K, Carlson T, Siciliano SD, Peak D. Chemical speciation and fate of tripolyphosphate after application to a calcareous soil. GEOCHEMICAL TRANSACTIONS 2018; 19:1. [PMID: 29313216 PMCID: PMC5758486 DOI: 10.1186/s12932-017-0046-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/19/2017] [Indexed: 06/07/2023]
Abstract
Adsorption and precipitation reactions often dictate the availability of phosphorus in soil environments. Tripolyphosphate (TPP) is considered a form of slow release P fertilizer in P limited soils, however, investigations of the chemical fate of TPP in soils are limited. It has been proposed that TPP rapidly hydrolyzes in the soil solution before adsorbing or precipitating with soil surfaces, but in model systems, TPP also adsorbs rapidly onto mineral surfaces. To study the adsorption behavior of TPP in calcareous soils, a short-term (48 h) TPP spike was performed under laboratory conditions. To determine the fate of TPP under field conditions, two different liquid TPP amendments were applied to a P limited subsurface field site via an in-ground injection system. Phosphorus speciation was assessed using X-ray absorption spectroscopy, total and labile extractable P, and X-ray diffraction. Adsorption of TPP to soil mineral surfaces was rapid (< 48 h) and persisted without fully hydrolyzing to ortho-P. Linear combination fitting of XAS data indicated that the distribution of adsorbed P was highest (~ 30-40%) throughout the site after the first TPP amendment application (high water volume and low TPP concentrations). In contrast, lower water volumes with more concentrated TPP resulted in lower relative fractions of adsorbed P (15-25%), but a significant increase in total P concentrations (~ 3000 mg P kg soil) and adsorbed P (60%) directly adjacent to the injection system. This demonstrates that TPP application increases the adsorbed P fraction of calcareous soils through rapid adsorption reactions with soil mineral surfaces.
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Affiliation(s)
- Jordan G. Hamilton
- Department of Soil Science, University of Saskatchewan, Saskatoon, SK S7N 5A8 Canada
| | - Jay Grosskleg
- Federated Cooperatives Ltd., Saskatoon, SK S7K 0H2 Canada
| | - David Hilger
- Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON Canada
| | - Kris Bradshaw
- Federated Cooperatives Ltd., Saskatoon, SK S7K 0H2 Canada
| | | | - Steven D. Siciliano
- Department of Soil Science, University of Saskatchewan, Saskatoon, SK S7N 5A8 Canada
| | - Derek Peak
- Department of Soil Science, University of Saskatchewan, Saskatoon, SK S7N 5A8 Canada
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18
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Wei Y, Zhao Y, Fan Y, Lu Q, Li M, Wei Q, Zhao Y, Cao Z, Wei Z. Impact of phosphate-solubilizing bacteria inoculation methods on phosphorus transformation and long-term utilization in composting. BIORESOURCE TECHNOLOGY 2017; 241:134-141. [PMID: 28551434 DOI: 10.1016/j.biortech.2017.05.099] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/12/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to assess the effect of phosphate-solubilizing bacteria (PSB) application and inoculation methods on rock phosphate (RP) solubilization and bacterial community during composting. The results showed that PSB inoculation in different stages of composting, especially both in the beginning and cooling stages, not only improved the diversity and abundance of PSB and bacterial community, but also distinctly increased the content of potential available phosphorus. Redundancy analysis indicated that the combined inoculation of PSB in the initial stage with higher inoculation amount and in the cooling stage with lower inoculation amount was the best way to improve the inoculation effect and increase the solubilization and utilization of RP during composting. Besides, we suggested three methods to improve phosphorus transformation and long-term utilization efficiency in composts based on biological fixation of phosphates by humic substance and phosphate-accumulating organisms.
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Affiliation(s)
- Yuquan Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yuying Fan
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Qian Lu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Mingxiao Li
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Qingbin Wei
- Heilongjiang Province Environmental Monitoring Centre, Harbin 150056, China
| | - Yi Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zhenyu Cao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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19
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Chen T, Philips C, Hamilton J, Chartbrand B, Grosskleg J, Bradshaw K, Carlson T, Timlick K, Peak D, Siciliano SD. Citrate Addition Increased Phosphorus Bioavailability and Enhanced Gasoline Bioremediation. JOURNAL OF ENVIRONMENTAL QUALITY 2017; 46:975-983. [PMID: 28991988 DOI: 10.2134/jeq2017.02.0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phosphorus (P) bioavailability often limits gasoline biodegradation in calcareous cold-region soils. One possible method to increase P bioavailability in such soils is the addition of citrate. Citrate addition at the field scale may increase hydrocarbon degradation by: (i) enhancing inorganic and organic P dissolution and desorption, (ii) increasing hydrocarbon bioavailability, and/or (iii) stimulating microbial activity. Alternatively, citrate addition may inhibit activity due to competitive effects on carbon metabolism. Using a field-scale in situ biostimulation study, we evaluated if citrate could stimulate gasoline degradation and what the dominant mechanism of this stimulation will be. Two large bore injectors were constructed at a site contaminated with gasoline, and a biostimulation solution of 11 mM MgSO, 1 mM HPO, and 0.08 mM HNO at pH 6.5 in municipal potable water was injected at ∼5000 L d for about 4 mo. Following this, 10 mM citric acid was incorporated into the existing biostimulation solution and the site continued to be stimulated for 8 mo. After citrate addition, the bioavailable P fraction in groundwater and soil increased. Iron(II) groundwater concentrations increased and corresponded to decreases in benzene, toluene, ethylbenzene, xylenes (BTEX) in groundwater, as well as a decrease in F1 in the soil saturated zone. Overall, citrate addition increased P bioavailability and may stimulate anaerobic microbial activity, resulting in accelerated anaerobic gasoline bioremediation in cold-region calcareous soils.
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20
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Karppinen EM, Stewart KJ, Farrell RE, Siciliano SD. Petroleum hydrocarbon remediation in frozen soil using a meat and bonemeal biochar plus fertilizer. CHEMOSPHERE 2017; 173:330-339. [PMID: 28122292 DOI: 10.1016/j.chemosphere.2017.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/09/2016] [Accepted: 01/03/2017] [Indexed: 06/06/2023]
Abstract
Petroleum hydrocarbon (PHC) degradation slows significantly during the winter which substantially increases the time it takes to remediate soil in Arctic landfarms. The aim of this laboratory trial was to assess the potential of a meat and bonemeal (MBM) biochar to stimulate PHC degradation in contaminated soil collected from Iqaluit, Canada. Over 90 days, 3% (w/w) MBM biochar significantly increased F3- (equivalent nC16-C34) PHC degradation rate constants (k) in frozen soils when compared to the fertilizer (urea and monoammonium phosphate) control. Taking into consideration extensive variability within treatments and negative k values, this difference may not reflect significant remediation. Decreasing C17/Pr and C18/Ph ratios in the frozen soil suggest that this reduction is a result of microbial degradation rather than volatilization. Amendment type and application rate affected the immediate abiotic losses of F2 and F3-PHC in sterile soils, with the greatest losses occurring in compost-amended treatments in the first 24 h. In frozen soils, MBM biochar was found to increase liquid water content (θliquid) but not nutrient supply rates. Under frozen but not thawed conditions, genes for aromatic (C2,3O and nahAc) but not aliphatic (alkB) PHC degradation increased over time in both biochar-amended and control treatments but total viable PHC-degrading populations only increased in biochar-amended soils. Based on these results, it is possible that PHC degradation in biochar-amended soils is active and even enhanced under frozen conditions, but further investigation is required.
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Affiliation(s)
- Erin M Karppinen
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Katherine J Stewart
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Richard E Farrell
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Steven D Siciliano
- Department of Soil Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada; Toxicology Group, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada.
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21
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Hamilton JG, Hilger D, Peak D. Mechanisms of tripolyphosphate adsorption and hydrolysis on goethite. J Colloid Interface Sci 2017; 491:190-198. [DOI: 10.1016/j.jcis.2016.12.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/14/2016] [Accepted: 12/15/2016] [Indexed: 11/28/2022]
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